Table 1.

Detection of M. tuberculosis complex in respiratory specimens by initial and new versions of AMTDT

Microscopy resultTest and resultNo. of specimens with the following culture result:
PositiveaNegativeTotal
PositiveAMTDT 1
 Positive48048
 Negative019b 19
 Total481967
AMTDT 2
 Positive48048
 Negative019b 19
 Total481967
NegativeAMTDT 1
 Positive34034
 Negative13296c 309
 Total47296343
AMTDT 2
 Positive42042
 Negative5296c 301
 Total47296343
TotalAMTDT 1
 Positive82082
 Negative13315d 328
 Total95315410
AMTDT 2
 Positive90090
 Negative5315d 320
 Total95315410
  • a Only data for specimens with culture-positive results for M. tuberculosis are included.

  • b Nineteen specimens were AMTDT negative and culture positive for NTM.

  • c Seven specimens were AMTDT negative and culture positive for NTM.

  • d Twenty-six specimens were AMTDT negative and culture positive for NTM.